Fire-control arrangement



July 1 1924. 1,499,664

' P. KAMINSKI FIRE CONTROL ARRANGEMENT Filed Aug. 25. 1921 0 0 y B U X z T ()R Q Y Do P J Patented July 1, 1924.

1 No. S. 46447 UNITED STATES PATENTOFFICE.

IPAUL KAMINSKI, OF BERLIN-PANKOW, GERMANY, ASSIGNOR T SIEMENS & EASI'JSKI;

AKTIENGESELLSOHAIT, OF BIEMENSB T reunion or omen.

ems-common AJJ'I, NEAR BERLIN, GERMANY, A 003- aaamemrmrr.

\- i -1 v v. Continuation Bi application. senor 1T0.- 648374, flied. thine 4 ,1928. This application filed Ootober'il'l, 1928.

Serial No. 671,108.

To all whom it may concern:

Be it known that I, PAUL Kaimnzsm, a citizen of the German Empire'; residing at Berlin-Pankow, Germany, have invented certain new and useful Improvements in Fire-Control Arrangements (\for which I have filed ap lications: Germany, 1 9".- 3. 17, /72 f; Sweden, .14. 6;.2l), Nr. 2605/; Norway, '19. '6'. 20,-, No. 205-94; Italy, 22. 6. 20, No. 38992;; Spain, .62.7. 20, No. 74507; Japan, 9. 7. 20,,N0. 384992;;E'enmark, 17. 7. 21, Ser. No. 2221-20; I-lbllaurd, 28. 7. 20, Ser. No. 15845;. Ar entina-, J/une 2, I921, Ser. No. 23047),- of w ich. the": followmg is a specification.

My invention relates in general tw fire control arrangements and more: particullarly to arrangements or a paratusrfor al lowing for the delay in ifischarging, ii. ea. the delay that ensues between the moment: a gun aimed at the target is let OE and the;

' moment the projectile emerges from the:

muzzle' There are two proper moments. for firing: uns mounted on moving bases, such ass ips, and controlled from a central position or station. These two moments are:

1. In the case of guns fix'edto the moving: bottom, the moment in which the target passes through the sight line, and

2. In the case of guns trained so as to follow the target, the moment iin which the target, that appears to be moving up and down past a middle positiomreverses its direction of travel and is therefore at rest relatively to the gun.

In the former of these two cases the delay in discharging i.- e. the time that pases from the moment the sightiline is on the tar t to the moment ill-Which the projectile eaves the muzzle of the 11, must of course allowed for.. This a owance forthe delay in discharging hitherto involved, in the said former cases-of fixed guns, cumbersome special contrivances, which-might generally be dispensed. with in gunstraine so as to follows the target, getlzause in lzfilter case theileafiect ram ea :11 ,erall l ne e, ong ocount. 0% the a anent motitin 0% the tar-fit yery ama injthe neighbourhood of t 'e position of the reversal. ofithis-mm tion, and as the position'of rest-Loocupiedat;

the point of reversal will always last a certime. But when the movements 3f tlgf bottom ca' in the gun are oonsi era e as n cag in which the ship rolls severel it is extremely diflicult to let ofi the guns at the moment of the reversal of its rolling motion, 00 i. e.,; at the moment the ship is at rest. The

0 erations of switching the contro 11g gear 0? gun-elevating machines on and o and the continued motion of these machines after they are switched off, always cause a certam delay in the coming to rest of the gun. Hence, between the moment at which the positlon of reversal of the ship is recogn zed and the moment at which the surely aimed pro ectile is 'disch'ar ed from the gun which. as some to rest, t ere will alwais be a certain difference ,in time. It is t erefore practieally impossible to discharge the just azltthe moment of reversal, and the discharge generally take place a short time after that mnment. It is thus seen that a. dela in. discharging must also be reckoned wit in thev second of the above-mentioned cases.

object of m invention is to eliminatetliee of the clay in discharge in such so oasess irrespective-of the amount of rolling oflftlie: vessel. This is accomplished by insertinggonrmcting devices between the sighting cleniiee (observation telesco e)- and the electrical signal transmitter which either di- 55 rectlyrcmtr-ols the elevating machinery of the or enables the guns to'be trained by t e ollow the pointer system. The said comethng devices are adapted-twantomatlcally eliminate the eifectof the said delay-inidischairging.

Thesii rentiom is illustrated in the draw- 1ng WhlCB. is 'a diagrammatic perspective representfiion 0:15 a constructional formwfthe same:.

The'transmitte-r G'- wliich affects the-else vation of; the gums, and. which is set by the ap aratuss; (not shown); that imparts the ba t1c= devation to them, is also setthrough. the medium of? the 'gean 'wheels- J ,3 J00 H, by theihanclle, handlwheel'iorcouplingg K mounted on the: shafti C. These'setting'gf movementsscorreep 0nd toz/the a parent tions of the-.target on account 0 the pivoted- 111111'01' F arranged beforesthe pe h sightin tol'soopeateelf, h

- clination of the'cannon and the mirror F or theaiming telescope itself, and as the mirror or the telescope is. kept directed toconstantly turned onto the target by corresponding motions bein imparted to it by the handle K through t e medium of the shaft C, the bevel wheel D, planet wheel R, shaft A, worm S and the wormwheel By this means the setting of the gun, or, m the arrangement illustrated, the setting of the transmitter, is effected inaccordance with the rolling of the ship.

Now in order to allow for the delay n dis charging, an additional movement is unparted to the gun or transmitter G. This additional movement is derived from a cam disk M whose curvature corresponds to the delays of discharging that take place at all angles of lurch that the ship is liable to describe.

As the delay in discharging is generally an almost constant value, the correct shape of the curve of the cam can easily be calculated, because the polar coordinates of this curve are defined by the particular angle-of lurch in question, being the roduct of the delay in discharging (whic may beassumed to be constant) and the angular velocity of the ship depending upon the value of the particular angle of urch. In practice the value of the angle of velocity of a rolling shi rises from zero at the'moment of reversa to a maximum when the deck is in horizontal position, which value is numerically equal to one half the value of the particular angle of lurch. In the example illustrated in the drawin when the mirror F or the sighting tefiescope is directed in aiming, a rotary motion corresponding to the a particular rolling motion in question, is imparted to the cam M when the shaft C is turned by the handle K, the said motion bein transmitted through the gear-wheels L, P T, U and V. This motion is transmitted against the action of a spring B to the rack N from which it is transmitted further through the pinion O to the bevel wheel Q, of the planet gear D R Q. The wheel It thus receives an additional motion to compensate for the delay in dischargingat any angle of lurch, this additional motion being imparted to the shaft A and through this shaft to the mirror F of the aiming telescope. Therefore the additional correction corresponding to the delay in dischargin is effected between the transmitter whic may comprise any known t pa, for exam 1e such as is disclosed in the S. Patent 0. 1,122,942 nted to me on December 29th,'1914,' that influences the in-- .ture.

noted in its effectin accordance with the particular angle of heel.

I claim:

1. In an electrical s stem for the telecontrol of guns in com ination a transmitter for effecting the inclination of the guns, a sightin device, means actuated b the operator i or inclining the sighting evice in accordance with the direction of the target and for simultaneously setting said transmitter, and additional means mechanically driven by said setting means for automatically imparting a correctional movement to said sighting device corresponding to the delay in gun discharging and the angular velocity of the ships heeling.

2. In an electrical system for the telecontrol of guns, a transmitter for effecting the inclination of the guns, a sighting device, means actuated by the operator for inclining the si hting device in accordance with the direction of the target and for simultaneously setting said transmitter, a cam whose curvature is a product of the delay in dischar ing the guns, and the angular velocity of the ships rolling, means mechanically connected to said operator actuated means for rotating said cam, a rack adapted to be displaced by said cam and 100 to lmpart additional movement to said sighting device.

3. In an ,electrical system for the telecontrol of guns, a transmitterffor effecting the inclinationof the guns, -'a sighting de- 105 vice, means actuated by the operator for inclinmg1 the sighting device in accordance with t e directlon of the target and for simultaneously setting said transmitter, a cam whose curvature is a product of the 110 delay in discharging the guns and the angular velocity of the ship 5 rolling, means mechanically connected to said operator alctuated means for rotating said cam, a rack adapted to be displaced by said ,cam and to 115 impart additional movementto said sighting device, and adjusting means for the cam so as' .to compensate for errors due to the rolling of the ship.

In test mony whereof I aflix my signamo PAUL ,KAMINSKI.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,499,664, granted July 1, 1924, upon the application of Paul Kaminski, of Berlin-Pankow, Germany, for an improvement in Fire-Control Arrangements, an error appears requiring correction 'as follows: In the heading to the printed specification, lines 5 and 6, strike out Continuation of application Serial No. 643,274, filed June 4, 1923. This application filed October 27, 1923. Serial No. 671,103. and insert Application filed August 25, 1921. Serial N 0. 495,291.; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 19th day of August, A. D. 1924.

[SEAL] KARL FENNING,

Acting Uommz'ssz'oner of Patents, 

